Messages in this thread | | | Date | Tue, 14 Feb 2012 00:13:36 +1100 | Subject | Re: Pe: [PATCH v5 1/3] virtio-scsi: first version | From | ronnie sahlberg <> |
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On Tue, Feb 14, 2012 at 12:00 AM, Michael S. Tsirkin <mst@redhat.com> wrote: > On Mon, Feb 13, 2012 at 02:54:03PM +0200, Dor Laor wrote: >> Only if you use the pci multi-function option but that kills >> standard hot unplug > > It doesn't kill it as such, rather you can't unplug luns individually.
Isnt that just a consequence of the current implementation rather than a SCSI limitation?
A different way to do hoplug could be to flag all devices as removable in the standard inq page then leave the LUN there persistently and what you remove/add is not the LUN device itself but just the media in the device.
Instead of hot-plug remove the LUN, hot-plug becomes "media eject" or "media insert". The device remains present all time, you never remove it, but instead hot-plug controls if the media is present or not.
This would require implementing at least START_STOP_UNIT and PREVENT_ALLOW_MEDIUM_REMOVAL opcode emulation from SBC.
regards ronnie sahlberg
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